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Acoustoelastic FD Simulation of Elastic Wave Propagation in Prestressed Media

文献类型：期刊论文

作者Yang, Haidi1,5; Fu, Li-Yun1,5; Fu, Bo-Ye3,4; Muller, Tobias M.2
刊名FRONTIERS IN EARTH SCIENCE
出版日期2022-04-28
卷号10页码:18
关键词acoustoelasticity elastic wave propagation modelling CPML absorbing boundary condition rotated staggered grid (RSG) method
DOI10.3389/feart.2022.886920
英文摘要Insights into wave propagation in prestressed media are important in geophysical applications such as monitoring changes in geo-pressure and tectonic stress. This can be addressed by acoustoelasticity theory, which accounts for nonlinear strain responses due to stresses of finite magnitude. In this study, a rotated staggered grid finite-difference (RSG-FD) method with an unsplit convolutional perfectly matched layer absorbing boundary is used to solve the relevant acoustoelastic equations with third-order elastic constants for elastic wave propagation in prestressed media. We partially verify our numerical simulations by the plane-wave theoretical solution. Comparisons of theoretical and calculated wave velocities are conducted for both P-wave and S-wave as a function of hydrostatic prestresses. We discuss several aspects of the numerical implementation. Numerical acoustoelasticity simulations for wave propagation in single- and double-layer models are carried out under four states of prestresses, confining, uniaxial, pure-shear, and simple-shear. The results display the effective anisotropy of elastic wave propagation in acoustoelastic media, illustrating that the prestress-induced velocity anisotropy is of orthotropic features strongly related to the orientation of prestresses. These examples demonstrate the significant impact of prestressed conditions on seismic responses in both phase and amplitude.
WOS关键词NUMERICAL-SIMULATION ; GRAZING-INCIDENCE ; DIFFERENCE ; ANISOTROPY
资助项目National Natural Science Foundation of China ; [41,821,002] ; [41,720,104,006]
WOS研究方向Geology
语种英语
WOS记录号WOS:000795874200001
出版者FRONTIERS MEDIA SA
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/105971]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Fu, Li-Yun
作者单位1.China Univ Petr East China, Shandong Prov Key Lab Deep Oil & Gas, Qingdao, Peoples R China
2.Ctr Invest Cient & Educ Super Ensenada CICESE, Dept Seismol, Ensenada, Mexico
3.Inst Earth Sci, Chinese Acad Sci, Beijing, Peoples R China
4.Inst Geol & Geophys, Chinese Acad Sci, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
5.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Haidi,Fu, Li-Yun,Fu, Bo-Ye,et al. Acoustoelastic FD Simulation of Elastic Wave Propagation in Prestressed Media[J]. FRONTIERS IN EARTH SCIENCE,2022,10:18.
APA Yang, Haidi,Fu, Li-Yun,Fu, Bo-Ye,&Muller, Tobias M..(2022).Acoustoelastic FD Simulation of Elastic Wave Propagation in Prestressed Media.FRONTIERS IN EARTH SCIENCE,10,18.
MLA Yang, Haidi,et al."Acoustoelastic FD Simulation of Elastic Wave Propagation in Prestressed Media".FRONTIERS IN EARTH SCIENCE 10(2022):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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